Pump-actuating mechanism



R.A- DEAN.

PUMP ACTUATING MECHANISM. I APPLICATION FILED APR.23, 1919. V

3 SHEET$ -SHEET I attorney R. A.'DEAN.

PUMP ACTUAT-ING MECHANISM;

APPLICATION FILED APR.23,1919.

3 v a a I Z 2? Patented Apr. 19, 1921.

PUMP ACTUATING MECHANISM.

APPLICATION FlL ED APR.23. 1919- 1 ,375, 1 35. Patented Apr. 19, 1921.

number of gallons or fractions of a gallon tame stares AT NT Bonn-Bra. DEAN, or 'rz'Lna'rExAs.

'rulvrr-acrua'rrne MECHANISM.

such as are used for measuring and dis-' pensing gasolene, lubricating. oils and other liquids, and particularly relates to a means for. securing a reciprocation of the piston of the pump and the measurement of the dispensed by the pump.

The measuring pumps that are now in use are operated by turning a cranlr which causes a movement of the pump piston 1n one direction and then by reversing the movement of the crank, the pump piston is moved'in a reverse direction. In-other words, the crank is turned one way in order to discharge the contents of the pump cyl nder and then it is turned in the opposite way in order to refill this cylinder.

The main object of my invention 18 to avoid objections to this character byproviding a pump actuating means so constructed that a continuous movement of the crank in one direction will cause a reciprocation of the piston in both directions.

Other objects will appear in the course of the following description. f

My invention is illustratedfin the accompanying drawings, wherein Figure 1 is an elevation of my improved pump operating mechanism, the cylinder of the pump being shown in section;

i Fig. 2 is a vertical transverse sect onal view of the operatin mechanism in position just before the carrier is aboutto shift;

Fig. 3 is a sectional view on the line 3-3 of Fig. 2

Fig: 4 is a section on the line 4-4- of Fig. 2;

Fig. 5 is a fragmentary view of the gears 20 and 20 and a portion of the casing;

Fig. 6 is a diametrical sectional view of the registering wheel;

Fig. 7 is a fragmentary section on the line 77 of. Fig. 6;

Fig. 8 is a fragmentary elevation of the periphery of the registering wheel and its strip; and.

Application filed Apri123, 1919. Seria1No.292,095.

Specification of Letters Patent. Patented Apr, 19,- 191 21,

F ig. 9 is a fragmentary section on the line 9-4) of Fig-8.

Referringto these drawings, it will, be seen that'my actuating device comprises a base 10 having thereon uprights 11, which uprights are connected by transversememv bers 12 and 13 and 14 and 15 respectively, the members 12 and 13 being vertically spaced from each other,'as are the members 14 andf15 for a, purpose which will belater stated. Disposed between the uprights'll n v and transversely shiftable on guides, is a carrier 16. This carrier may be formed with members 17 and 18 which are disposed in the spaces between the members 12 and 13 and 14; and 15, sothat thecarrier is .supported for, lateral shifting movement in the guides thus formed. Extending through the middle of the carrier is a shaft 19 which carries upon it a pinion 20 on the rear face of the frame, and this pinion is adapted to engage with any desired recording or registering wheel, as will be later described. 011 the front of the machine, the shaft 19 is pro vided with a crank handle 21 or with other suitable means whereby the shaft 19 may be rotated. The carrier 16 is longitudinally slotted, as at 22, and attached. to the back and front of the casing or fra .ae are guides 23 which extend above and below the carrier, and each reduced in thickness at its middle so as to pass through the slot 22.

These guides are parallel to each other and are preferably widened at their upper and lower ends and are vertically grooved, as

Disposed to move vertically through these grooves 24 and the slot 22 in the carrier, is i a double, rack comprising rack bars 25, hav ing confronting. teeth 26, these rack bars being connected at their upper ends, as at 27, in any suitable manner, andthe raclr bars at their upper extremities having laterally extending portions, 28 and 28 The lower part 28 extends in opposite directions from the upper part 28. The shaft 19 carries upon ita pinion 29 adapted to mesh with the rack teeth 26, this pinion is shifted in one direction, the teeth on the pinion29 will engage with one ofthe rack hift when the double rackbar ha reached rier 16.

one end of its'stroke, or the other, 1 pro vide at the upper and lower ends of the combined rack bars, the outwardly projecting rollers 30 and 31 respectively and pivot upon the member 141 an arm 32, this arm being pivoted at one end, as at 33, and at its other being connected to a relatively strong contractile spring 8 1 which, in turn, is connected to one end of the sliding car This arm 32 extends downward and toward the central line of the rack and is normally, therefore, disposed in the path of movement of the roller 30. When this roller 30 moves downward and the rack reaches a position nearly at the end of its stroke, the roller will engage the arm 32 and shift it laterally and increase the tension of the spring 34:, and thus this spring will exert a pull upon the carrier 16, urging it to the left inFig. 2. A like arm 32 is mounted upon the member 15 and coacts with the roller 31, this arm being also connected by the spring 3 1 to the sliding carrier, but this spring extending to the opposite end of the carrier to the first named spring 3-1.

The carrier is locked from longitudinal shifting movement by vertically shiftable latches 35 and 36, each disposed against the outside face of one of the guides 28 and also extending through the slot 22 in the carrier. The latch is provided at its upper end with a head 37 adapted to fit in the end of the slot 22 when this latch is shifted and engage against the end wall of the slot 22 to hold the carrier or slide in its laterally shifted position against the movement in the opposite direction. To this end, the latch extends downward below the slide 16 and is formed with a longitudinally extending slot 38 through wh ich passes a pin 39 acting as a guide pin. The guide 36 has a head 37 at its lower end and this guide is likewise formed with a slot 38 through which passes the pin 39, but the head of thislatch is disposed below the carrier 16 and the shank extends upward instead of downward. The lateral prolongations 28 and 28 of the double rack are adapted to engage respectively with these latches 35 and 36. Springs 10 act to urge the latch 36 upward and the latch 35 downward.

Now it will be obvious that when thecarrier 16 is shifted toward the left in Fig. 2, the head at of the nah as Will be @13- gaged in the end of the slot 22 and wi l hold, the carrier laterally shifted against any movement toward the right and this will hold the pinion. 29 in engagement with the rack teeth of the left hand rack bar. If

the crank be given-a clockwiserotation,the double rack bar w ll be shifted. upward until wheel 11 may be used.

the carrier 16, the roller 31 engages the lower arm 32 and shifts it toward the right which increases the tension on the corresponding spring 3 1 so that as soon as the latch head 37 rises above the upper face of the carrier 16, the carrier will be hifted to the right, carrying the pinion 29' to the the right and" engaging it with the right hand set of rack teeth and a continuation of the clockwise movement. of the crank handle 21 will, therefore, cause the rack to move downward. As soon as the rack has reached its uppermost position and the carrier 16 has been shifted to the right, the head 37 of the right hand latch 36 will be shifted into the slot 22 to hold the carrier to the right until the rack has moved its full'distance downward. It will thus be obvious that a continuou rotation ofthe handle 21 will cause a reciprocation of the do ublc rack. This double rack may be connected in any suitable manner to the cylinder of a pump, and I do not wish to be limited to any particular manner of connecting the double rack to the cylinder of the pump. I have illustrated a cylinder A having its piston rod B connected to the rack, but I do not wish to be limited to any particular means of connection or any of the other details of construction, as it is obvious that the double rack might be connected either directly to the piston P of the cylinder or through intermediate gearing thereto.

lvlounted upon the rear of. the supporting frame or casing and specifically upon the member 18, is a registering wheel, designated generally ll. 1 have shewnthis reg istering wheel as being provided with a loose gear wheel 42 adapted to engage with the pinion 20 driven from pinion 20 on the shaft 19, but ll do not wish to be limited to this, any other means of engaging this pinion 20 to the registering This registering wheel is mounted'on a stub shaft 4-3 which, at its rear end, engaged with and supported on the member 18 and which rotatably supports the geer wheel 42 and an integral cone clutch'oil. A cross bar 44 is supported by brackets 45 extending outward from the member 18. fine of these brackets carries an index supporting member 46 having an index pointer 17. Attached to the cross bar 1 1- is one end of a coiled spring 48, the other end of which is connected to the hub of the-registering wheel so as to urge the registering wheel in one direction. The registering wheel is provided with stop 49 which engages with a stop carried on the member 18, thus limiting the registering wheel to one complete rotation. The coiled spring 4.8 will tend to rotate the registering wheel into a position where 'the stops 41-9 and 50 are in engagementwith each other. The gear wheel 42 is loose upon the gear wheel may be oper'atively .engaged wlth the registering wheel orcdlsengaged therefrom, said means comprising ahead 52, a screw. shank 51, and acone clutch 53. When this head 52 is rotated in one direc tion, it will -d-isengagel the;gear wheel 42 from the re isterin wheel and'when rotated in the other direction it .will engage these two wheels. i l 1 The perimeter of the registering wheel is provided with graduations. Preferably,

thesegraduations are arranged in two series,

as indicated'in Fig. 8. One column or series will have graduations thereon indicatinggallons as, for instance, frOInLO to 1''? gallons or fractions of a gallon, if desired, while the other column will contain therein theztotal' cost ofthe gallons of gasolene, arrangedcoordinately to the gallon graduations. The cost graduations will, of course, be based upon a certaindefinite price of gas.- olene or other commodity per' gallon and strips 54 of suitable'material having thereon these graduations will be provided covering the gasolene at different prices, which will beadapted to be applied to the periphery of the recording-or indicating wheel and removed.- therefromr I do not wish to be limited to any particular means for holding these graduated strips in engagement with the periphery of the wheel, but I have illustrated a strip which is overlapped at its ends and detachably engaged with the wheel by means of a screw. Any other suitable arrangement, however, may be provided.

In the use of this device, the gage wheel will be, disposed with the stops 49 and 50 bearing against each other and with the pointer. 47 pointing at zero on the strip on the periphery of the gage wheel. The clutch formed bythe cone 53 and screw-threaded shank 51 will beloosened. Now if it be .desired to serve a customer with. the liquid for which the pumpis designed, the head 52 is turned to engagethe gage wheel or recordingwheel with the gear. wheel 42. Then the crank handle 21 is rotated in a clockwise direction and this causes, as before stated, a reciprocation of. the rack bar and the reciprocation of thexpump piston until the desired quantityv has been dispensed. 'The rotation of the shaft 19-will cause a corresponding rotation of the gage wheel against the action of the spring 48 and when'the dispensing operation has been finished, the pointer 47 will indicate on the gagewheel the number of gallons or fractions of a gallon which 'have been dispensed and the cost thereof at. a certain definite market price-per gallon. When the 'customer has been served and the calculation made, the "engagement between the gear Wheel42 andthe-gage wheel 41 isreleased,

whereby the 'spring 48 will 'actto returnthe gage wheel to'its zero position.- Ihave illustratedavery simple means of connecting the gage Wheelto the "gear wheel 42 and-driving this gage wheel, .but it will be understoodthat other means. might be pro+ vided for this purpose, and that I do not wish" to be limited to this particular arrangement oi gearing. Furthermore, it will be seenthata recording register'may be have not illustrated this, however, as it is an obvious arrangement;

I It will be seen that I not only show the '75 easily applied to the machine adaptedto-be amount pumped in gallons and fractions of 1 a gallon, but also in dollarsandcents. The

device is suitable for dispensing gasolenc, coaloil, lubricating oils, or any other liquid that is sold by the gallon. or by'a greater or less-measure, and-that the measuring gage couldbe graduated to'suit the use to which the. pump is'intended to be placed. For dispensing coal oil or lubricating oil where only relatively small quantities are sold, there would be nonecessity for the gage wheel showing more than five gallons or so, as this is as much as is usually sold at one time. At gasolene stations, however, the gage wheel or register could be made of a much greater capacity. The graduated gage strip or indicating strip which is disposed upon the pcriphery of the record Wheel may be made of celluloid, thin sheet metal or othersuitable material which wouldnot be'likely to become damaged from hard usage. Preferably, rubber buffers will be disposed upon the stops 49 and 50 to reduce the shockwhen the stops come together. I do not, of course, wish to be limited to the particular form of supporting frame of thismechanism, as it is obvious that" it may be mounted in frames or housings of different characters,'and also obvious that the gage wheel might be mounted within a housing provided with ajdispl'ay opening through which the periphery of the wheel could be read. Of course, 'a' double acting pump is designed to be used with this device which will eject oil from the cylinder on oneside of the piston, while drawing oil into the pump barrel of the cylinder on the opposite side of-the piston. With theconstructions as now in use, it" is necessary, as before stated, aftermoving the piston in one direction to eject a r-measureof oil, to'reverse the piston in'order'to fill the barrel. This takes time, andthis time is saved in: my construction by providing a mechanism which causes a complete reciprocation or the piston upon a continuous rotation of the operating crank.

lolaimz- 1. A mechanism of the character describedcomprising a rack having opposed rack teeth, a carrier having a slot through which the rack passes,'said 1 carrier being shiftable transversely of the rack, a rotatable'pinion mounted on the carrier and engageable with one or the other of the sets of rack teeth, locking members mounted on eachside of' the rack and urged into position between the ends of the slots and the rack to thereby hold'the carrier from return movement after it has been shifted in one direction, means acting upon a predetermined movement of the rack in one direction urging the carrier in one direction and shifting one ofthe locking members out ofits lockin'g position and shifting the other member into locking position, and means acting upon a predetermined-movement of the rack in the other direction urging the carrierflin a direc tion oppositetothat in which it was first urged and shifting the last named'member out of its locking position and shifting the other lockingmember into operative position. I

2. A mechanism of the'character described comprising a reciprocatable rack having opposed rack teeth, a carrier having afslot through which the rack passes, the carrier being slidable transversely of the rack, a pinion mounted on'the carrier and engageable alternately with one or the other of the' sets of rack teeth, coiled springs attached to opposite ends of the carrier and extending toward the rack, said springs being normally slack, means for placing a tension. on one of said springs when the rack has shifted to one extremity of its movement to thereby urge the carrier in a direction to carry the pinion from engagement with one set of rack teeth to the opposite rack teeth, means for placing the other spring under tension when the carrier has moved a full stroke in the opposite direction to thereby reverse the movement of the carrier and the pinion, and latches holding the carrier shifted in one or the other of its positions, one of said latches being released and the other shifted into operative position upon the arrival of the rack at opposite ends of its stroke. i

'3. mechanism of the character described comprising a rack having oppositely disposed rack teeth, a carrier having a slot through which the rack passes, said carrier being shiftable transversely of the rack. a pinion mounted on the carrier and engageable alternately with one or the other of the sets of rack teeth, locking members mounted on' each side of the rack and alternately shifted into locking position to hold the car'- rierin shifted position as the rack reaches one end or the other of its stroke, means for shifting the carrier when the rack reaches one end or the other of its stroke comprising coiled contractile springs attached to opposite ends of the carrier, pivoted arms disposed above and below the pinion and con to said guides, a double-toothed rack hav ing opposed rack teeth movable between said guides at right angles to the carrier, a pinion mounted upon the carrier and engageable with one orthe other set of rack teeth, arms pivotally mounted upon the frameand having springs connected to their free ends and to relatively opposite ends of the carrler, said springs when placed under tension urging the carrier in one or the other directlon, latching members alternately engageable with the slide and acting to hold the slide in one or the other of its shiftedpositlons, means urging said latching means into engagement with the slide, means at opposite ends of the rack engaging said arms to shift them to thereby increase the tension of the springs connected thereto and thereby shift the carrier in a direction to carry the pinion out of engagement with one set of gear teeth into engagement with the other set of gear teeth. I, r 7

5. A pump actuating mechanism comprising a rack having opposed sets of rack teeth, a carrier disposed at right angles to the stroke of the double rack and shiftable longitudinally, a pinion mounted on the carrier and engageable with one or the other of the sets of rack teeth, means for rotating said pinion, a supporting frame for the carrler, and upper and lower arms each pivotedat one end and operatively connected to the carrier, and'means'mounted upon the ends of the rack acting to alternately shift said arms as the rack reaches the end of its ing 'a supporting frame, a longitudinally movable rack having opposed facing rack teeth, a carrier slidably mounted on the frame and having a slot through which said rack passes, the carrier sliding at right angles to the path of movement of the rack, a pinion mounted upon the carrier and engageable'with either of the sets of rack teeth as the carrier is shifted, guides between which the rack passes, said guides extend- 7 slot of the carrier and at opposite ends thereof and bearing against the guides, each latch having a head, one of the latches having its head at one end and the other having its head at the opposite end, means urging the latches in a direction to carry the heads against the carrier, studs projecting from opposite ends of the double rack, arms disposed on opposite sides of the carrier, each arm being pivoted at one end to the frame,

' and the free ends of the arms extending to- Ward the carrier at an inclination to and across the path of travel of said studs, the free ends of the arms being connected .to relatively opposite ends of the carrier by contractile springs to thereby urge the carrier in one direction or the other as the rack reaches the end of a stroke, and'means carried by said rack for shifting an-active latching member into its inoperative position to permit the shifting ofthe carrier to thereby shift the pinion from its engagement with one set of rack teeth into engagement with the other set of rack teeth and thereby reverse the niovement'of the rack.

. 7 The combination with a double acting reciprocating pump, of an actuating device therefor including a reciprocating element, a manually rotatable element, and means causing a reciprocation of the element upon a continuous rotation of the rotatable element in one direction.

In testimony whereof I'hereunto afiEix my signature in the presence of two Witnesses.

V ROBERT AVDEAN.

Witnesses: r v i FBED L. GILLIAM, W; J. STEPHENS. 

